Moskowitz, Sam
in: Moskowitz, Sam. Explorers of the Infinite: Shapers of Science Fiction. New York: World, 1963. pp. 261-277. (Reprinted from Fantastic, June 1960.) (Reprinted in Science Fantasy, No. 48, 1961.)
Capanna, Pablo
Helice: Reflexiones críticas sobre ficción especulativa No. 11: 43-55. January 2009.
Markley, Oliver
Journal of Futures Studies 20(2): 123-132. December 2015.
Crossley, Robert
Syracuse, NY: Syracuse University Press, 1994. 474pp.
Fantasy Commentator 4(1): 3-26, 32-34. Winter 1978-79. Also in: Stapledon, Olaf. Far Future Calling. Philadelphia: Oswald Train, 1979. pp. 15-69.
Geoghegan, Vincent
Utopian Studies 16(3): 347-364. 2005.
Smith, Curtis C.
in: Barmeyer, Eike, ed. Science fiction: theorie und geschichte. Munchen: Fink, 1972 pp. 275-292.
Ladd, Thyrill L.
Fantasy Commentator 1(10): 251. Spring 1946. (No. 10)
Lem, Stanislaw
Science Fiction Studies 13(3):272-291. November 1986.
in: Broderick, Damien, ed. Earth is But a Star: Excursions Through Science Fiction to the Far Future. Crawley, W.A.: University of Western Australia Press, 2001. pp. 412-421.
Science Fiction Studies 14(1):1-8. March 1987. (Reprinted in: Evans, Arthur B., ed. Vintage Visions: Essays on Early Science Fiction. Middletown, CT: Wesleyan University Press, 2014.)
Patterson, Bill
Heinlein Journal No. 20: 52-57. January 2007.
Lofficier, J. M.; Lofficier, Randy
Starlog 100: 39-40. November 1985.
No authors listed.
Locus 20(7):5. July 1987.
Boyarkina, Iren
In: Boyarkina, Iren, ed. Passages through Enclosures and the Spacetime Continuum in English and American Science Fiction. Newcastle upon Tyne: Cambridge Scholars Publishing, 2022. p. 128-140.
Boyakina, Iren
In: Boyarkina, Iren, ed. Passages through Enclosures and the Spacetime Continuum in English and American Science Fiction. Cambridge: Cambridge Scholars Publishing, 2022. p. 128-139.
Postgraduate English No. 33:[25 p.] 2016. http://community.dur.ac.uk/postgraduate.english/ojs/index.php/pgenglish/article/view/188 accessed 14.July.2018
Michel, J. B.
Astronaut Science Fantasy 1(2):9-14. Fall 1948. Reprinted from: Alchemist 1(3). Summer 1940.
Murphy, Timothy S.
Utopian Studies 29(1): 21-43. 2018.
Science-Fiction Studies 9(3): 294-305. November 1982.
Payne, Mark
Classical Receptions Journal 12(1): 91-108. January 2020.
Smith, Tara
Ph. D. Dissertation, University of Sydney, 2022. https://hdl.handle.net/2123/27587
Bailey, K. V.
Foundation 15:53-56. January 1979. Comment, Angus Taylor: Foundation 16:24-25. May 1979.
Bangsund, John
Australian Science Fiction Review No. 7:3-7. February 1967.
Silverberg, Robert
Asimov Science Fiction 33(3): 5-7. March 2009. (Reprinted in: Silverberg, Robert. Musings and Meditations: Reflection on Science Fiction and Other Matters. New York: Nonstop, 2011. )
Asimov�s Science Fiction 32(4/5): 8-11 April/May 2008. Reprinted In: Silverberg, Robert. Living in the Future: Robert Silverberg on Science Fiction. Framingham MA: NESFA Press, 2023. p. 135-139.
Asimov's Science Fiction 32(7): 8-11. July 2008. Reprinted In: Silverberg, Robert. Living in the Future: Robert Silverberg on Science Fiction. Framingham MA: NESFA Press, 2023. p. 140-144.
Asimov's Science Fiction 26(3): 4-7. March 2002. (Introduction, reprinted from Norstrilia, 2002
Purser-Hallard, Philip
D. Phil. Dissertation, Christ Church (University of Oxford), 2002. x, 274 p. (DAI-C 70(31).) 
George Bernard Shaw, David Lindsay, Olaf Stapledon, CS Lewis, Arthur C Clarke, James Blish, Isaac Asimov, Brian Aldiss, Philip K Dick, Bruce Sterling, William Gibson and Dan Simmons
Bossay, Lyssa D.
Ph. D. Dissertation, University of Texas Austin, 1979. 151 p. (DAI-A 40(11): 5857. May 1980.)
Huntington, John
Science-Fiction Studies 9(3): 257-264. November 1982.
Tremaine, Louis
in: McCarthy, Patrick A., ed. The Legacy of Olaf Stapledon. Westport, CT: Greenwood, 1989. pp.67-86.
Stone-Blackburn, Susan
in: Wolf, Milton T., ed. Shaw and Science Fiction. University Park, PA: Pennsylvania State University Press, 1997. (Shaw: The Annual of Bernard Shaw Studies, V. 17.) pp. 185-198.
Otto, Eric
in: Berman, Michael, ed. The Everyday Fantastic: Essays on Science Fiction and Human Being. Newcastle, UK: Cambridge Scholars Publishing, 2008. p. 31-48.
Gregory, Alan P. R.
Waco : Baylor University Press, 2015. 318 p.
Klein, Gerard
Fiction No. 167: . octobre 1967. (Reprinted: http://www.quarte-deux.org/archives/klein/ [14 p.]
Elkins, Charles
in: McCarthy, Patrick A., ed. The Legacy of Olaf Stapledon. Westport, CT: Greenwood, 1989. pp.53-68.
Science Fiction Chronicle 8(11):51. August 1987.
Nieddu, Francesco
Between 9(17): . May 2019. https://ojs.unica.it/index.php/between/article/view/3618
Kinnaird, John
in: Magill, Frank N., ed. Survey of Science Fiction Literature, Vol. 5. Englewood Cliffs, NJ: Salem Press, 1979. pp. 2085-2090.
Waugh, Robert H.
Extrapolation 38(3): 207-221. Fall 1997.
Swanson, Roy A.
Science-Fiction Studies 9(3): 284-293. November 1982.
McCarthy, Patrick A.
in: McCarthy, Patrick A., ed. The Legacy of Olaf Stapledon. Westport, CT: Greenwood, 1989. pp.39-53.
Stableford, Brian M.
SFWA Bulletin 20(4):10-11. Winter 1986.
Branham, Robert J.
Science Fiction Studies 9(3): 249-256. November 1982.
Science-Fiction Studies 9(3):249-256. November 1982.
In: Pederson, Jay P., ed. St. James Guide to Science Fiction Writers. 4th ed. Detroit: St. James, 1996. p. 883-885.
in: Kunitz, S. J., ed. Twentieth Century Authors. New York: Wilson, 1942. pp. 1325-1326.
Kelleghan, Fiona
in: Westfahl, Gary, ed. The Greenwood Encyclopedia of Science Fiction and Fantasy: Themes, Works, and Wonders. Westport, CT: Greenwood, 2005. p. 1250-1252.
in: Magill, Frank N., ed. Survey of Science Fiction Literature, Vol. 5. Englewood Cliffs, NJ: Salem Press, 1979. pp. 2150-2155.
Science-Fiction Studies 8(3): 266-279. November 1981.
Stapledon, Olaf
Hanover, NH: University of New England, 1987. 382pp.
Hanover, NH: University Press of America, 1988. 383pp.
Goodwin, Jonathan
Journal of the Fantastic in the Arts 25(1): 78-92. 2014.
Tung, Charles M.
In: Tung, Charles M. Modernism and Time Machines. Edinburgh: Edinburgh University Press, 2019. p. 166-211.
Pak, Chris
Liverpool, UK: Liverpool University Press, 2016. 243 p.
Shaw, Bruce
Jefferson, NC: McFarland, 2010. 260 p.
Science Fiction Studies 31(1): 25-42. March 2004.
Aldiss, Brian W.
in: Aldiss, Brian W. The Detached Retina: Aspects of SF and Fantasy. Syracuse, NY: Syracuse University Press, 1995. pp.37-43.
Elkins, Charles; Greenberg, Martin H.; McCarthy, Patrick A.
New York: Greenwood, 1989. 130pp.
Rieder, John
in: Attebery, Brian; Hollinger, Veronica, eds. Parabolas of Science Fiction. Middledown, CT: Wesleyan University Press, 2013. p. 161-179.
Gillings, Walter H.
Scientifiction: The British Fantasy Review 1(3): 3-4. June 1937. 
 
Reprinted in: Sawyer, Andy, ed. Science Fiction. New York: Routledge, 2020. Vol. 3, p. 9-12.
Australian Science Fiction Review No. 7: 3-7. February 1967.
Pagan, Nicholas O.
Basingstoke: Palgrave Pivot, 2014. 79 p.
Foundation No. 46:27-39. Autumn 1989.
Baxter, Stephen
Matrix No. 185: 8-9. 2007.
Willis, Lynn W.
Master's Thesis, San Francisco State College, 1973. 149pp.
Riedel, Finn
in: Petzold, Dieter, ed. Inklings: Jahrbuch fur Literatur und Aesthetik. Band 18. Moers: Brendow, 2000. p. 121-133.
Bertonneau, Thomas F.
Anthropoetics: The Journal of Generative Anthropology 24(2): 1-20. Spring 2019.
Foundation No. 129: 6-19. 2018.
Caietele Echinox No. 46: 335-348. 2024. 
http://www.ceeol.com/search/journal-detail?id=778
Chan, Wing Chun Julia
Ph. D. Dissertation, Yale University, 2020. 266 p. (DAI-A 83(2)(E).)
Davenport, Basil
in: Stapledon, Olaf. To The End of Time. New York: Funk, 1953. pp. viii-xvi. (Reprinted, Gregg, 1975.)
Philmus, Robert M.
Liverpool, UK: Liverpool University Press, 2005. 411 p.
Grafrath, Bernd
In: Murasow, Jurij and Werner, Sylwia, eds. Science oder Fiction? Stanislaw Lems Philosophie der Wissenschaft und Technik. Stuttgart: Fink Verlag, 2017. p. 97-112.
New York Times Sec. 1, p. 31. September 8, 1950.
The Wellsian No. 7: 38-39. Summer 1984.
Fiedler, Leslie A.
Galileo 11/12:34-36. 1979.
Extrapolation 13(1):5-15. December 1971.
Mosaic 13(3/4): 145-152. Spring/Summer 1980.
Sawyer, Andy
in: Bould, Mark, et al, eds. Fifty Key Figures in Science Fiction. New York: Routledge, 2010. p. 205-210.
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